1 /*
2 * Copyright (C) 2008 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /* ---- includes ----------------------------------------------------------- */
18
19 #include "b_TensorEm/Functions.h"
20 #include "b_BasicEm/Math.h"
21
22 /* ---- related objects --------------------------------------------------- */
23
24 /* ---- typedefs ----------------------------------------------------------- */
25
26 /* ---- constants ---------------------------------------------------------- */
27
28 /* ------------------------------------------------------------------------- */
29
30 /* ========================================================================= */
31 /* */
32 /* ---- \ghd{ external functions } ----------------------------------------- */
33 /* */
34 /* ========================================================================= */
35
36 /* ------------------------------------------------------------------------- */
37
bts_absIntLog2(int32 vA)38 uint32 bts_absIntLog2( int32 vA )
39 {
40 return bbs_intLog2( bbs_abs( vA ) );
41 }
42
43 /* ------------------------------------------------------------------------- */
44
bts_maxAbsIntLog2Of2(int32 v1A,int32 v2A)45 uint32 bts_maxAbsIntLog2Of2( int32 v1A, int32 v2A )
46 {
47 uint32 maxL = bbs_max( ( uint32 )bbs_abs( v1A ), ( uint32 )bbs_abs( v2A ) );
48 return bbs_intLog2( maxL );
49 }
50
51 /* ------------------------------------------------------------------------- */
52
bts_maxAbsIntLog2Of3(int32 v1A,int32 v2A,int32 v3A)53 uint32 bts_maxAbsIntLog2Of3( int32 v1A, int32 v2A, int32 v3A )
54 {
55 uint32 maxL = bbs_abs( v1A );
56 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v2A ) );
57 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v3A ) );
58 return bbs_intLog2( maxL );
59 }
60
61 /* ------------------------------------------------------------------------- */
62
bts_maxAbsIntLog2Of4(int32 v1A,int32 v2A,int32 v3A,int32 v4A)63 uint32 bts_maxAbsIntLog2Of4( int32 v1A, int32 v2A, int32 v3A, int32 v4A )
64 {
65 uint32 maxL = bbs_abs( v1A );
66 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v2A ) );
67 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v3A ) );
68 maxL = bbs_max( maxL, ( uint32 )bbs_abs( v4A ) );
69 return bbs_intLog2( maxL );
70 }
71
72 /* ------------------------------------------------------------------------- */
73